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Metering: how it helps water and energy
conservation
Steve Jordan CEO, WaterCity
Smart Water Meters
• AMI: Advanced Metering infrastructure
• Two way communication • Automated reading • Hourly or better usage resolution
• Conservation Benefits ~7% • Customer Leak detection • Conservation monitoring • Drought compliance
Smart Water Meter • Private radio network: Utility builds
own network • Wide area network, e.g. on top of
electric utility smart meter • Cellular network Few standards on “smart”
Meter only part of solution
• Smart meter tells customer he has a leak, not where
• Larger leak problem is on the utility side of meter ~15%
Opportunities • IoT based leak detection for
utility • Virtual metering for losses
between utility/customer Leak detection the old fashioned way AWWA
Source: AWWA, CA DWR
Why Water Sub metering? • Tenant billing • Building management
• Conservation driven, e.g. LEED • Best practice building management
• On site recycling • Conservation codes • Rebates • Billing
Tenant billing: Multifamily Residential Long desired MF sub-metering: -Provides incentives and metrics -Reduces MF consumption 15-25% -Retrofit labor cost high Game changer: -Sub-meters in CA MF next year -Rebates for sub-metering (SCVWD) Tenants rights: Proper billing, notice, cutoffs, late fees, calibration, fees
Opportunities: • Easy install smart sub-meters • Water monitoring software • Tenant billing software
Building LEED Certification • Bronze, Silver, Gold, Platinum • Sub-metering necessary to achieve
maximum points • Special Water rules for
• Retrofit Buildings • New Buildings • Outdoor • Hospitality • Hospital • Others
Source: USGBC, APT
Building management Indoor Water leaks #1 insurance claim! • Damage, loss of use, mold Best practices: • Leak detection near fixtures • Tenant sub-meters • Critical system sub-meters, e.g. sprinklers • Remote management system: smart sub-meters,
shutoff valves, integration with BMS • Payback with one sensed leak
Opportunities: • Low cost smart sub-meters • Easy install sub-meters, e.g. no pipe
cutting • Cloud based management • Tenant billing software
On-Site Reuse: SF example On site reuse requirements: • SF new large buildings • Other cities: large
campuses Sub metering needed: • LEED measurement • Measured rebates • Bragging rights Opportunities • Reuse technologies • Sale/purchase • Retrofit
On Site Recycling: Water Purchase Agreement
Before WaterCity After WaterCity
Utility Bills - Water - Sewer - Energy
Utility Bills
WPA Payment
SAVINGS • No upfront cost for the
customer • 20 Year contract with
escalators • Water sold at lower
cost than utility
• Energy savings • Additional LEED points
possible • Avoid sewer surcharges
Core
eco
nom
ics
Adde
d be
nefit
s
On site recycling: laundry water
Sub-meters essential to business: • All treated water • Make up water • LEED compliance • Rebates Challenges • Power loss on meter but not
pump • Meter clogs • By pass loops in the water • Accuracy differences vs.
utility meter
Thank you!
Steve Jordan CEO, WaterCity
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